diff options
Diffstat (limited to 'kernel/events/core.c')
| -rw-r--r-- | kernel/events/core.c | 52 |
1 files changed, 30 insertions, 22 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 67612ce359ad..80cca2b30c4f 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -5120,6 +5120,8 @@ static long perf_compat_ioctl(struct file *file, unsigned int cmd, switch (_IOC_NR(cmd)) { case _IOC_NR(PERF_EVENT_IOC_SET_FILTER): case _IOC_NR(PERF_EVENT_IOC_ID): + case _IOC_NR(PERF_EVENT_IOC_QUERY_BPF): + case _IOC_NR(PERF_EVENT_IOC_MODIFY_ATTRIBUTES): /* Fix up pointer size (usually 4 -> 8 in 32-on-64-bit case */ if (_IOC_SIZE(cmd) == sizeof(compat_uptr_t)) { cmd &= ~IOCSIZE_MASK; @@ -6668,7 +6670,7 @@ static void perf_event_addr_filters_exec(struct perf_event *event, void *data) raw_spin_lock_irqsave(&ifh->lock, flags); list_for_each_entry(filter, &ifh->list, entry) { - if (filter->inode) { + if (filter->path.dentry) { event->addr_filters_offs[count] = 0; restart++; } @@ -7333,7 +7335,7 @@ static bool perf_addr_filter_match(struct perf_addr_filter *filter, struct file *file, unsigned long offset, unsigned long size) { - if (filter->inode != file_inode(file)) + if (d_inode(filter->path.dentry) != file_inode(file)) return false; if (filter->offset > offset + size) @@ -8686,8 +8688,7 @@ static void free_filters_list(struct list_head *filters) struct perf_addr_filter *filter, *iter; list_for_each_entry_safe(filter, iter, filters, entry) { - if (filter->inode) - iput(filter->inode); + path_put(&filter->path); list_del(&filter->entry); kfree(filter); } @@ -8784,7 +8785,7 @@ static void perf_event_addr_filters_apply(struct perf_event *event) * Adjust base offset if the filter is associated to a binary * that needs to be mapped: */ - if (filter->inode) + if (filter->path.dentry) event->addr_filters_offs[count] = perf_addr_filter_apply(filter, mm); @@ -8858,7 +8859,6 @@ perf_event_parse_addr_filter(struct perf_event *event, char *fstr, { struct perf_addr_filter *filter = NULL; char *start, *orig, *filename = NULL; - struct path path; substring_t args[MAX_OPT_ARGS]; int state = IF_STATE_ACTION, token; unsigned int kernel = 0; @@ -8971,19 +8971,18 @@ perf_event_parse_addr_filter(struct perf_event *event, char *fstr, goto fail_free_name; /* look up the path and grab its inode */ - ret = kern_path(filename, LOOKUP_FOLLOW, &path); + ret = kern_path(filename, LOOKUP_FOLLOW, + &filter->path); if (ret) goto fail_free_name; - filter->inode = igrab(d_inode(path.dentry)); - path_put(&path); kfree(filename); filename = NULL; ret = -EINVAL; - if (!filter->inode || - !S_ISREG(filter->inode->i_mode)) - /* free_filters_list() will iput() */ + if (!filter->path.dentry || + !S_ISREG(d_inode(filter->path.dentry) + ->i_mode)) goto fail; event->addr_filters.nr_file_filters++; @@ -10521,19 +10520,20 @@ SYSCALL_DEFINE5(perf_event_open, if (pmu->task_ctx_nr == perf_sw_context) event->event_caps |= PERF_EV_CAP_SOFTWARE; - if (group_leader && - (is_software_event(event) != is_software_event(group_leader))) { - if (is_software_event(event)) { + if (group_leader) { + if (is_software_event(event) && + !in_software_context(group_leader)) { /* - * If event and group_leader are not both a software - * event, and event is, then group leader is not. + * If the event is a sw event, but the group_leader + * is on hw context. * - * Allow the addition of software events to !software - * groups, this is safe because software events never - * fail to schedule. + * Allow the addition of software events to hw + * groups, this is safe because software events + * never fail to schedule. */ - pmu = group_leader->pmu; - } else if (is_software_event(group_leader) && + pmu = group_leader->ctx->pmu; + } else if (!is_software_event(event) && + is_software_event(group_leader) && (group_leader->group_caps & PERF_EV_CAP_SOFTWARE)) { /* * In case the group is a pure software group, and we @@ -11212,6 +11212,14 @@ struct file *perf_event_get(unsigned int fd) return file; } +const struct perf_event *perf_get_event(struct file *file) +{ + if (file->f_op != &perf_fops) + return ERR_PTR(-EINVAL); + + return file->private_data; +} + const struct perf_event_attr *perf_event_attrs(struct perf_event *event) { if (!event) |
